Freelancer Serhii S. (payment Systems Integration) ≡ Retail-freelance

Freelancers

Information Portfolio 6 Reviews 145 Activity

Serhii S.
Kyiv, Ukraine
141 4
Available for hire

Projects 142
Rating 5.0
Rating 5 548

Want to offer Serhii S. a job?

If you have an account, log in

Last project: 4 months back
Bids in the last two weeks: 1
Collaboration with clients: 132
Last visit: 11 hours 30 minutes ago

114 USD

0 376

Integration of LiqPay payment system for WIX website

Payment Systems Integration

Project description: A complete online payment cycle has been implemented through the LiqPay.ua payment system with the ability to process orders, track transactions, and a user-friendly administrative panel for managing payments. Main features:…

Integration of Smart-ID age verification on the website

900 USD

1 295

Integration of Smart-ID age verification on the website

Online Stores & E-commerce

Age verification 18+ via Smart-ID on WIX website Project: Integration of electronic user identification through Smart-ID with automatic age verification. Task: Provide a secure and convenient mechanism for confirming 18+ age on a WIX-based website,…

224 USD

1 306

Connect Nova Poshta to the Wix website

Web Programming

Integration of Nova Poshta on the WIX website A custom order checkout page has been implemented on the WIX platform with integration of Nova Poshta — a critically important delivery service for Ukrainian users. What has been done: - Fully developed a…

Integration with Poster POS (joinposter)

34 USD

0 33

Integration with Poster POS (joinposter)

Client Management & CRM

Integration was made through the API. As a result, the online delivery of orders from the Tilda basket was set to the pos-interface of the Poster POS application for further processing. The process is automated and does not require the use of third-…

112 USD

0 25

Integration with RetailCRM

Client Management & CRM

was performed * integration of inbound applications from Rosetka Marketplace to RetailCRM with bilateral order status synchronization, Imported catalogue of goods, • the control of the duplicate, * Integrated New Post to Transfer TTN to the…

63 USD

0 30

Integration with RetailCRM

Client Management & CRM

Tilda + Retail CRM is integrated. This resulted in a stable import of applications from Tildas to RetailCRM. Control of duplicates and customer search by CRM * Complete synchronization of the Tildy and Retail CRM catalogue * Transmission of all…

Integration of the payment system on the website (brand copies)

198 USD

The work has been prolonged by mutual agreement! In the end, everything is set up and working!

Project	Budget	Proposal	Deadline	Added
It is necessary to implement a custom integration of the WayForPay payment system on a website that operates on the platform.	Not specified	160 USD	2 days	12 Jul
Setting up the payment system for customer payments on the existing website (experience is a must)	Not specified	137 USD	2 days	29 Jun
Improvement of WooCommerce payment logic (WayForPay + partial payment)	34 USD	190 USD	4 days	4 Jun
Turnkey PayPal business connection	Not specified	168 USD	5 days	18 Mar
LiQPAY Connection	336 USD	224 USD	5 days	28 Feb
Integration of the payment system on the website (brand copies)	198 USD	198 USD	3 days	26 Jan
Set up Way for Pay payment on the Wix website	22 USD	85 USD	2 days	23 Jan
Need consultation on payment systems for	16 USD	179 USD	1 day	13 Jan
Creation of a WooCommerce payment plugin through Revolut API (without webhook, with logs)	320 USD	320 USD	3 days	16 Dec 2025
Connecting Wayforpay to the store	16 USD	67 USD	1 day	1 Dec 2025

Profile

Indicators

Specializations

Payment Systems Integration

Tags

Skills and abilities

Services

Programming

Outsourcing & consulting

Portfolio Works

Client reviews

5.0

Serhii S.

5.0

Serhii S.

Consultation: Choosing a payment system Stripe vs Worldline

5.0

Serhii S.

Integration of Rozetka/Epicenter/Prom

5.0

Serhii S.

5.0

Serhii S.

Synchronization Poster + WordPress

5.0

Serhii S.

Flodeco

5.0

Serhii S.

Connecting LiqPay payment solution to the website (WIX)

5.0

Serhii S.

5.0

Serhii S.

5.0

Serhii S.

Connecting the payment system

5.0

Serhii S.

Integration of Przelewy24 with Tilda

5.0

Serhii S.

5.0

Serhii S.

Connect UTM tags for traffic analytics to Retail CRM on a one-page website

5.0

Serhii S.

3.5

Serhii S.

Integration with Yandex API

5.0

Serhii S.

5.0

Serhii S.

Ipay to Wix

5.0

Serhii S.

Integrate the WayForPay payment system into Ecwid e-commerce

5.0

Serhii S.

5.0

Serhii S.

Indicators

Total projects:

142

Average rating:

5.0

4.9

4.9

4.9

4.9

4.9

Activity